Deprecated Mist wallet mnemonic type

There used to be ethereum wallet called Mist, which was deprecated years ago. Does any of you happen to know what kind of mnemonic phrase did it use?

I stumbled upon an address with some funds, but only have mnemonic + password, not the keystore file. Seems like it is perhaps not BIP39, as the word list is different. Still has 12 words, but I couldn't use it anywhere I tried. One word for example is "unglue".